NoCheatPlus
Detect and fight the exploitation of various flaws/bugs in Minecraft!
Introduction
NoCheatPlus attempts to prevent cheat clients from exploiting weaknesses of Minecraft or its protocol, making your server more safe. Checks cover a wide range of issues including flying and speeding, fighting hacks, fast block breaking and nukers, inventory hacks, chat spam and other types of malicious behaviour. For a more complete list have a look at the Features Page.
NoCheatPlus puts emphasis on configurability and allows you to customize actions that are carried out when a player fails a check (e.g. silent cancelling, executing commands, just logging). Bypass permissions allow to control what check to apply for which players, all checks can be deactivated in the configuration, also having the option for world-specific configuration files. Many checks allow more detailed configuration to adjust sensitivity.
Certainly NoCheatPlus is not a magical bullet, it uses a lot of heuristics and even guessing, so you will encounter false positives here and there and also not catch every single violation. Example video of how NoCheatPlus blocks cheats (outdated plugin version).
NoCheatPlus was introduced by NeatMonster, building on the code base of NoCheat by Evenprime.
Recommended
The following plugins might be useful to have a look at.
ProtocolLib
Allows NoCheatPlus to activate packet-level checks, covering a range of exploits that can't be monitored using ordinary means. Since roughly Minecraft 1.7.10, the fight.speed check can't work as expected anymore, due to changes in CraftBukkit. With ProtocolLib this can be repaired.
CompatNoCheatPlus (cncp)
Make plugins like mcMMO or MachinaCraft more compatbile with NoCheatPlus. Not all existing plugins are covered (yet), but you can leave a note or create an issue/ticket request for cncp. Phasing out: Citizens 2 should work with NCP out of the box, MagicSpells are working on compatibility too - rest will be integrated into NCP.
Orebfuscator
Orebfuscator fights all sorts of X-ray-hacks by altering the map information that is sent to the players, such that they have to mine blocks to actually reveal what is behind. Virtually a "must have". (Latest versions of Spigot contain features of Orebfuscator.)
Downloads and History of Changes
- Download officially approved versions on the Files page at BukkitDev.
- Development builds have been moved over to the Jenkins at md-5.net.
- Do not download from any other source, do not use jars other people send you.
- Change lists: Wiki (digest) | Jenkins (by build number) | GitHub (all commits).
- Source code
Plugin statistics are no longer reported to mcstats.org.
Support
Documentation Resources
- Consider first: Frequently asked Questions and Known Issues.
- Wiki (Configuration, Permissions, Commands)
- Developers might have a look at the page describing the API of NoCheatPlus.
Contact us
- Quick questions can be asked on this page,
or on IRC (Server: irc.spi.gt | Default-Port: 6667 | SSL-Port: 6697 | Channel: #nocheat | Web client: WebIRC) - For real issues or feature requests please create a new issue/ticket or add to an existing issue/ticket.
- To send information that is not to be seen by all, you can also reach us by PM to @asofold and @MyPictures. @IceAP (IRC: ICE) will also help or redirect the conversation. Please do not contact the user 'NoCheatPlus', it is for administrative purposes only and will likely not be answered in time. Keep to BukkitDev and GitHub for support, do not trust users on other forums or websites, also not if their nick names are the same as NCP staff on BukkitDev.
Please always state the output of the "ncp version" command to let us know versions in use (users of cncp also the "cncp" command).
Comments
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_ForgeUser9668734 Owner
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_ForgeUser15078623 Ticket Manager
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_ForgeUser16101223 Contributor
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_ForgeUser7091862 Former Author
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_ForgeUser7459264 Former Author
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Forge_User_61842651 Author
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MyPicturesCP Artist
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Posted Feb 26, 2014Hi,
I use your plugin with MCPC+ and MoCreatures on my server. The issue I have is, that i get chatmessages when a MoCreatures creature breaks a block. My question is, how I can disable this messages from MoCreatures.
Regards
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Posted Feb 25, 2014i think doors interaction is bugged players have issues opening and closing doors sometimes
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Posted Feb 25, 2014@Bodyash
I think we should push this into a ticket, keeping track here should become difficult. Please continue discussion in Ticket 712.
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Posted Feb 24, 2014@asofold
Updated Only Spigot and NCP (667-668 - crash my server. 666 seems to be ok)
allways the same (3 crashes for 1 day, after crash #2 i updeted NCP from 667 to 668, and got crash after 3 hours of running server)
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Posted Feb 24, 2014@StreetkillnHD
Like that but not that ! You hit the right check-group (blockinteract) but it seems you altered the blockinteract.direction settings? The check that was too spammy was blockinteract .visible so you need to alter the action of that one just as with direction (actions: cancel).
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Posted Feb 24, 2014@asofold
like this http://puu.sh/7981n.png ?
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Posted Feb 24, 2014@horsetears
Did you update the server or other plugins as well? Just remove the kick command from the wrongblock...actions entry for the time being.
@Nikkolo94
It is latency with checking for distances and directions. With higher latency the difference from what the server can see to what a player can see can be in the seconds range. So the other player might just have moved out of the hitting range.
@Hackettbr1
What does /nuke do ? Basically it depends on what /nuke actually does and also on what permissions you give owners - if you are ok with owners bypassing checks, then just give the owners the bypass permissions.
@Bodyash
Code-wise i don't see how the program can halt/delay there.
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Posted Feb 24, 2014Last 2 builds from jenkins: http://pastebin.com/SWRP2wAK
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Posted Feb 24, 2014can owners still do /nuke??
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Posted Feb 24, 2014@asofold
i dont think it is latency because if i remove ncp the problem isnt happening
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Posted Feb 24, 2014Players on our server are getting kicked for breaking blocks out of sync a LOT since the last update, even one of the staff members that plays normally. They aren't using any mods, just eff 3 and what not picks, any reason why this just started?
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Posted Feb 22, 2014@StreetkillnHD
You have to edit the configuration of NCP and then use the "ncp reload" command to apply the changes. The configuration should be in the plugins folder under NoCheatPlus/config.yml .
To alter the blockinteract.visible actions you will look for the actions entry in the checks.blockinteract.visible section in the configuration (checks: ... blockinteract: ... visible: .... actions:). Then to the right of "actions: " you remove everything but one "cancel" entry.
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Posted Feb 21, 2014@asofold
sorry. new at this. plugin. how do i change that?
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Posted Feb 21, 2014@CrueIdog
I intended to ask back, but seems i did not write it down.
Permissions are not 100 % consistent in naming, i think you should use nocheatplus.checks to let players bypass "checks" that are performed for players actions.
The other shortcut permissions are problematic, because the mods permissions don't update with world changing and the official bypass permission bypasses more than good (e.g. command hiding).
The other question is if you really want to disable all, because some cheats can tax the server a lot if not dealt with. If it is just some checks you want to disable, you could consider using a minimal world-specific configuration file (savebackconfig set to false + just disabling specific checks). Disabling the check by configuration should also save you more performance than using permissions.
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Posted Feb 21, 2014Sorry if I'm spamming you but I'm posting this again because I don't think you saw it but Is there a permission node that contains all the commands like nocheatplus* which would just let the group bypass nocheatplus? I need this so I can disable nocheatplus in 1 world.
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Posted Feb 21, 2014Accidentally flagged the latest release as "beta", while it is intended to be a "release":
NoCheatPlus 3.10.8-RC-sMD5NET-b664
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Posted Feb 21, 2014@StreetkillnHD
Just change the actions entry in checks.blockinteract.visible :
Default: "cancel vl>5 log:bvisible:0:2:if cancel"
Changed: "cancel"
This will just silently cancel.
Alternatives would be to increase the violation level by a lot by changing vl>5 to vl>500 or similar, or to increase the delay on the log action by a lot (advanced), so it does not spam.
You can also turn off all ingame alerts in the logging section for a radical change.
@sowerdb
What happens with tnt ?
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Posted Feb 21, 2014@StreetkillnHD
It is a bug with the tnt that does the same thing to me
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Posted Feb 21, 2014@asofold
i dont want them alerts. to spam my chat .
http://puu.sh/74fJK.png
its been doing it alot.
is there a way to turn just that alert off?
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Posted Feb 21, 2014@StreetkillnHD
I can not recommend that - it would allow severe nuking.
Why do you want to disable anything?
Is there an actual issue, or do you just want to get rid of the ingame alerts?